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- W2000322372 abstract "To investigate the usefulness of regional response to post-extrasystolic potentiation as a predictor of left ventricular viability in patients with coronary artery disease, 46 patients underwent calibrated biplane left ventricular cineangiography during which a single, timed ventricular premature contraction was introduced. Results: Of 758 normal or hypokinetic segments, 486 (64.1%) showed a positive response to post-extrasystolic potentiation. Of 116 akinetic or dyskinetic segments, only 51 (43.9%) showed a positive response to post-extrasystolic potentiation (P <0.001). Because akinetic or dyskinetic areas would not be expected to respond to post-extrasystolic potentiation based on animal laboratory data, alternative explanations were sought to explain such positive response in man. Analysis of percent change in chord length of normal or hypokinetic segments adjacent to akinetic or dyskinetic segments that did or did not respond to post-extrasystolic potentiation revealed (10.2% ± 1.2%) vs (1.3% ± 0.7%) improvement, respectively (P <0.001) (mean ± SE). Conclusion: Passive rather than active events may be responsible for “improved” regional wall motion following post-extrasystolic potentiation in akinetic or dyskinetic regions. If unrecognized, these factors may lead to improper interpretation of “intervention ventriculography” utilizing post-extrasystolic potentiation." @default.
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- W2000322372 title "Limitations of post-extrasystolic potentiation in assessing regional myocardial viability in man" @default.
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- W2000322372 doi "https://doi.org/10.1002/ccd.1810060406" @default.
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